Vlastimil Babka df76cee6bb mm, page_alloc: remove redundant checks from alloc fastpath ...

The allocation fast path contains two similar checks for zoneref->zone
being NULL, where zoneref points either to the first zone in the
zonelist, or to the preferred zone.  These can be NULL either due to
empty zonelist, or no zone being compatible with given nodemask or
task's cpuset.

These checks are unnecessary, because the zonelist walks in
first_zones_zonelist() and get_page_from_freelist() handle a NULL
starting zoneref->zone or preferred_zoneref->zone safely.  It's safe to
fallback to __alloc_pages_slowpath() where we also have the check early
enough.

Link: http://lkml.kernel.org/r/20170124150511.5710-1-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2017-02-24 17:46:54 -08:00

..

kasan

arm64 updates for 4.11:

2017-02-22 10:46:44 -08:00

backing-dev.c

mm/backing-dev.c: use rb_entry()

2017-02-22 16:41:30 -08:00

balloon_compaction.c

mm: balloon: use general non-lru movable page feature

2016-07-26 16:19:19 -07:00

bootmem.c

mm/bootmem.c: cosmetic improvement of code readability

2017-02-22 16:41:29 -08:00

cleancache.c

cleancache: constify cleancache_ops structure

2016-01-27 09:09:57 -05:00

cma_debug.c

mm/cma_debug: correct size input to bitmap function

2015-07-17 16:39:54 -07:00

cma.c

mm/cma: Cleanup highmem check

2017-01-11 13:56:49 +00:00

cma.h

mm: cma: mark cma_bitmap_maxno() inline in header

2015-08-14 15:56:32 -07:00

compaction.c

mm,compaction: serialize waitqueue_active() checks

2017-02-22 16:41:29 -08:00

debug_page_ref.c

mm/page_ref: add tracepoint to track down page reference manipulation

2016-03-17 15:09:34 -07:00

debug.c

mm, debug: print raw struct page data in __dump_page()

2016-12-12 18:55:08 -08:00

dmapool.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

early_ioremap.c

mm/early_ioremap: use offset_in_page macro

2015-11-05 19:34:48 -08:00

fadvise.c

mm: fadvise: avoid expensive remote LRU cache draining after FADV_DONTNEED

2016-12-20 09:48:46 -08:00

failslab.c

mm: fault-inject take over bootstrap kmem_cache check

2016-03-15 16:55:16 -07:00

filemap.c

mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf

2017-02-24 17:46:54 -08:00

frame_vector.c

mm: replace get_vaddr_frames() write/force parameters with gup_flags

2016-10-19 08:11:24 -07:00

frontswap.c

mm, frontswap: convert frontswap_enabled to static key

2016-07-26 16:19:19 -07:00

gup.c

userfaultfd: hugetlbfs: gup: support VM_FAULT_RETRY

2017-02-22 16:41:28 -08:00

highmem.c

mm/highmem: make nr_free_highpages() handles all highmem zones by itself

2016-05-19 19:12:14 -07:00

huge_memory.c

mm, thp: add new defer+madvise defrag option

2017-02-22 16:41:30 -08:00

hugetlb_cgroup.c

mm, hugetlb_cgroup: round limit_in_bytes down to hugepage size

2016-05-20 17:58:30 -07:00

hugetlb.c

mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf

2017-02-24 17:46:54 -08:00

hwpoison-inject.c

hwpoison: use page_cgroup_ino for filtering by memcg

2015-09-10 13:29:01 -07:00

init-mm.c

mm: Add a user_ns owner to mm_struct and fix ptrace permission checks

2016-11-22 11:49:48 -06:00

internal.h

oom-reaper: use madvise_dontneed() logic to decide if unmap the VMA

2017-02-22 16:41:30 -08:00

interval_tree.c

…

Kconfig

mm: THP page cache support for ppc64

2016-12-12 18:55:08 -08:00

Kconfig.debug

PM / Hibernate: allow hibernation with PAGE_POISONING_ZERO

2016-09-13 02:35:27 +02:00

khugepaged.c

mm: get rid of __GFP_OTHER_NODE

2017-01-10 18:31:55 -08:00

kmemcheck.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

kmemleak-test.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

kmemleak.c

kmemleak: fix reference to Documentation

2016-12-12 18:55:07 -08:00

ksm.c

mm/ksm: improve deduplication of zero pages with colouring

2017-02-24 17:46:53 -08:00

list_lru.c

mm/list_lru.c: avoid error-path NULL pointer deref

2016-10-27 18:43:42 -07:00

maccess.c

x86: remove more uaccess_32.h complexity

2016-05-22 17:21:27 -07:00

madvise.c

userfaultfd: non-cooperative: add madvise() event for MADV_REMOVE request

2017-02-24 17:46:54 -08:00

Makefile

mm/swap: add cache for swap slots allocation

2017-02-22 16:41:30 -08:00

memblock.c

memblock: embed memblock type name within struct memblock_type

2017-02-24 17:46:54 -08:00

memcontrol.c

slab: use memcg_kmem_cache_wq for slab destruction operations

2017-02-22 16:41:27 -08:00

memory_hotplug.c

mm/memory_hotplug.c: unexport __remove_pages()

2017-02-24 17:46:53 -08:00

memory-failure.c

mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked

2016-12-25 11:54:48 -08:00

memory.c

mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf

2017-02-24 17:46:54 -08:00

mempolicy.c

mm/mempolicy.c: do not put mempolicy before using its nodemask

2017-01-24 16:26:14 -08:00

mempool.c

Revert "mm, mempool: only set __GFP_NOMEMALLOC if there are free elements"

2016-07-28 16:07:41 -07:00

memtest.c

memtest: remove unused header files

2015-09-08 15:35:28 -07:00

migrate.c

mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked

2016-12-25 11:54:48 -08:00

mincore.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

mlock.c

thp: fix corner case of munlock() of PTE-mapped THPs

2016-11-30 16:32:52 -08:00

mm_init.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

mmap.c

mm: fix comments for mmap_init()

2017-02-24 17:46:54 -08:00

mmu_context.c

mm/mmu_context, sched/core: Fix mmu_context.h assumption

2016-04-28 11:44:19 +02:00

mmu_notifier.c

fix Christoph's email addresses

2016-03-17 15:09:34 -07:00

mmzone.c

mm/mmzone.c: swap likely to unlikely as code logic is different for next_zones_zonelist()

2017-02-22 16:41:29 -08:00

mprotect.c

mm: mprotect: use pmd_trans_unstable instead of taking the pmd_lock

2017-02-22 16:41:29 -08:00

mremap.c

userfaultfd: non-cooperative: optimize mremap_userfaultfd_complete()

2017-02-22 16:41:28 -08:00

msync.c

mm/msync: use offset_in_page macro

2015-11-05 19:34:48 -08:00

nobootmem.c

mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping

2016-10-11 15:06:33 -07:00

nommu.c

mm: fix comments for mmap_init()

2017-02-24 17:46:54 -08:00

oom_kill.c

mm, oom: header nodemask is NULL when cpusets are disabled

2017-02-24 17:46:53 -08:00

page_alloc.c

mm, page_alloc: remove redundant checks from alloc fastpath

2017-02-24 17:46:54 -08:00

page_counter.c

mm: page_counter: let page_counter_try_charge() return bool

2015-11-05 19:34:48 -08:00

page_ext.c

mm/page_ext: support extra space allocation by page_ext user

2016-10-07 18:46:27 -07:00

page_idle.c

mm, vmscan: move lru_lock to the node

2016-07-28 16:07:41 -07:00

page_io.c

writeback: add wbc_to_write_flags()

2016-11-02 10:24:03 -06:00

page_isolation.c

mm, page_alloc: avoid page_to_pfn() when merging buddies

2017-02-22 16:41:27 -08:00

page_owner.c

mm/page_owner: don't define fields on struct page_ext by hard-coding

2016-10-07 18:46:27 -07:00

page_poison.c

mm: check the return value of lookup_page_ext for all call sites

2016-06-03 15:06:22 -07:00

page-writeback.c

block: Use pointer to backing_dev_info from request_queue

2017-02-02 08:20:48 -07:00

pagewalk.c

thp: rename split_huge_page_pmd() to split_huge_pmd()

2016-01-15 17:56:32 -08:00

percpu-km.c

mm: percpu: use pr_fmt to prefix output

2016-03-17 15:09:34 -07:00

percpu-vm.c

…

percpu.c

Merge branch 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2016-12-13 12:34:47 -08:00

pgtable-generic.c

mm/thp/migration: switch from flush_tlb_range to flush_pmd_tlb_range

2016-03-17 15:09:34 -07:00

process_vm_access.c

mm: unexport __get_user_pages_unlocked()

2016-12-14 16:04:09 -08:00

quicklist.c

fix Christoph's email addresses

2016-03-17 15:09:34 -07:00

readahead.c

mm: don't cap request size based on read-ahead setting

2016-12-12 18:55:08 -08:00

rmap.c

mm, rmap: handle anon_vma_prepare() common case inline

2016-12-12 18:55:08 -08:00

shmem.c

mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf

2017-02-24 17:46:54 -08:00

slab_common.c

slab: use memcg_kmem_cache_wq for slab destruction operations

2017-02-22 16:41:27 -08:00

slab.c

slab: introduce __kmemcg_cache_deactivate()

2017-02-22 16:41:27 -08:00

slab.h

slab: remove synchronous synchronize_sched() from memcg cache deactivation path

2017-02-22 16:41:27 -08:00

slob.c

slab: introduce __kmemcg_cache_deactivate()

2017-02-22 16:41:27 -08:00

slub.c

slub: make sysfs directories for memcg sub-caches optional

2017-02-22 16:41:27 -08:00

sparse-vmemmap.c

treewide: replace obsolete _refok by __ref

2016-08-02 17:31:41 -04:00

sparse.c

mm/memory_hotplug: set magic number to page->freelist instead of page->lru.next

2017-02-22 16:41:29 -08:00

swap_cgroup.c

mm: convert printk(KERN_<LEVEL> to pr_<level>

2016-03-17 15:09:34 -07:00

swap_slots.c

mm/swap: skip readahead only when swap slot cache is enabled

2017-02-22 16:41:30 -08:00

swap_state.c

mm/swap: skip readahead only when swap slot cache is enabled

2017-02-22 16:41:30 -08:00

swap.c

mm: vmscan: move dirty pages out of the way until they're flushed

2017-02-24 17:46:54 -08:00

swapfile.c

mm/swap: enable swap slots cache usage

2017-02-22 16:41:30 -08:00

truncate.c

mm: Invalidate DAX radix tree entries only if appropriate

2016-12-26 20:29:24 -08:00

usercopy.c

mm/usercopy: Switch to using lm_alias

2017-01-11 13:56:50 +00:00

userfaultfd.c

userfaultfd: hugetlbfs: add UFFDIO_COPY support for shared mappings

2017-02-22 16:41:28 -08:00

util.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

vmacache.c

mm: unrig VMA cache hit ratio

2016-10-07 18:46:27 -07:00

vmalloc.c

mm, page_alloc: warn_alloc print nodemask

2017-02-22 16:41:30 -08:00

vmpressure.c

mm/vmpressure.c: fix subtree pressure detection

2016-02-03 08:28:43 -08:00

vmscan.c

mm: vmscan: move dirty pages out of the way until they're flushed

2017-02-24 17:46:54 -08:00

vmstat.c

mm, compaction: add vmstats for kcompactd work

2017-02-22 16:41:29 -08:00

workingset.c

mm, vmscan: cleanup lru size claculations

2017-02-22 16:41:30 -08:00

z3fold.c

mm/z3fold.c: limit first_num to the actual range of possible buddy indexes

2017-02-22 16:41:31 -08:00

zbud.c

mm/zbud.c: use list_last_entry() instead of list_tail_entry()

2016-01-15 11:40:52 -08:00

zpool.c

mm: zsmalloc: constify struct zs_pool name

2015-11-06 17:50:42 -08:00

zsmalloc.c

mm: fix some typos in mm/zsmalloc.c

2017-02-22 16:41:29 -08:00

zswap.c

zswap: disable changing params if init fails

2017-02-03 14:13:19 -08:00